Balanced exhaust-valve for explosive-engines.



U. Q. & G. STORLE.

BALANCED EXHAUST VALVE FOR EXPLOSIVE ENGINES APFLICAHDN HLED MAY 21, 1915.

1,2 1 8,487 Patented Mar. rs, 1917.

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MWATTORNEY mec.hanism illustrated in the accompanying witl r but the one gate D requires the carii UNITED sTAras r rnnr canton.

OLE O. STORLE AND GARFIELD STORLE, 0F TACOMA, WASHINGTON.

BALANCED EXHAUST-VALVE FOR EXPLOSIVE ENGINES.

Application filed May 21, 1915. Serial No. 29,553.

To all whom it mag concern:

Be it known that'we, ()Ln 0. STORLE and S'rounn, citizens of the United States,- residing at the city of'Tacolna, in the county of Pierce and State of lVashmg' ton, have invented certain new and useful Improvements in Balanced Exhaust-Valvesfor llxplosive-l'lngines, of which the following is a specification.

Our invention pertains to puppet exhaust valves for gasolene and other explosive engines now widely used in all kinds of motor vehicles..-

The object of our invention is to so utilize the pressure ofthe spent explosion within the cylinder in opening the exhaust valve as to reduce to a mininmm the required power of the valve operating mechanism of the engine.

W'e atthinthis object by means of the drawing, which comprises but one figure representlng a section lengthwise thi'ough the cylinder and exhaust port; ot a common fornrof a gasolene or explosive engine.

In the drawing the cylinder interior is represented at A and the piston at B, the latter being near the end of its stroke and at the begmning of the exhaust of the ex-' plosive' gas. The exhaust pdrt is shown at C, the valve, gate at D and the discharge at E. The operating mechanism is the cam F which lifts the stem G and the valve gate D mounted thereon, and allows the s 'ent gas to exba'ustfrom, the cylinder A. hen

the cam F passes beyond the lifting point, the spring l acting on thestan G closes the ,valve gate I) and the cylinder is clear for another action. It will he observed that the exhaust valve F to'anot ignly lift the stem G agginst the spring Hg at also to lift the gate against thepressure of'the' spent explosion of the cylinder A which at times is very great and requiresmuch power in the cam l The purpose of our invention'is to so utilize the pressure of the spent explosion as to balance the pressure on the gate D and iequire that the. cam Eon] y lift the weight ofifthe stern, theval've gate and the pressure of the spring H y We accomplish this purpose by making an auxiliary exhaust portI and gate J op-' osite the gate D as shown in the drawing he portI is opened only as the piston Specification of Letters Patent.

Patented Mar. 6, 1917.

nears the end of its stroke when they gas escaping from the cylinder A strikes the gate J with a pressure equal to and opposite to the pressure on the gate D. The valve pressure is thus balanced and the power rc uired to operate the cani F is reduced to a minimum. This enables the exhaust valve to be easily operated.

lt will be observed that the auxiliary port 1 is open only during the exact time necessary to balance the gate D and relieve thecam F of the usual excessive strain heretot'ore required.

It will be observed that the peripheral edge of the gate J is relatively thin and that itplays loosely within the opening in which it fits. in close proximity to the walls of the opening. This is for the purpose 0 preventing scale adhering to the gate an to cause the edge of the gate to act asa cleaner for the opening in which it Works,

so that scales that may be formed will when loosened be. ca'rriedofi' by the exhaust passmg through the port I.

our invention as herein shown and described will not only secure a saving of power in the cam F but will relieve the operating mechanism of much strain that will make a saving in gas, depreciation. and upkeep. The improvement is so simple that it is applicable to any form and size of-a gas or explosive engine without additional mechanism thereto. The exhaust valve being thus balanced, it will be practicable to enlarge the same without any loss of power in its operation which cannot now be done with the ordinary puppet valves in use.

Having thus described our invention,

whatwe claim as new and desire to secure by Letters Patent 1s:'

1. In an explosive engine, the combination wvith a piston cylinder having a main exhaust port 'and an auxiliary exhaust port leadingfrom ditierent points in the cylinder and comnunncatmg with an exhaust discharge, of a balanced controlling exhaust valve comprising a stem provided with spaced apart valves disposed to control communication between both exhaust ports and the exhaust discharge, substantially as described.

2. In an explosive en i-ne, the combination with "apiston cylinter having a main exhaust port and an auxiliary exhaust port leading from different points in the cylinder and communicating through separate valve openings into an |-\h:u| .1 (lisvhurge, of a Imhnnuml controlling G'Xilfllln't \nlvo ((HIIIHiH- ing a su-n'i pruviilod with vulnfor ('nr'h upvning into (ho vxhuusl. disvh'urgv. the valve for the nponing of thy nuxiliunv [mi-t having u relativetv thin pvripln-rul orlgv and operating within said opening: \\ith its Migninpmximity to the wall of tln- ()llfilillll". substantially as (USNIIJWL 3. In :IILPXPiuSiVlB unginv. Hm I'Ulllililliltmn, w th a piston v vhnrlvr having: a mum exhaust port at one Mn] 01' thv vvhndm and an auxiliary exhaust port :11 n puint h mn-1| the other and mnl tiirongirsqm'ratu valvv npvnlngs mm nn (2X- haust dim-harm: of :l hnhun-ml (anntrnllin n a I lmth mnnnnnit'nlingvxhznmt valwr'mnpris'ing a cum operated spring: inlIm-m-wl slum provided with a \illW' rm mush npening into the exhaust disi-Imrgv. tho (-Xhnllst pressure on the main -xhnnst port valve being counterbalanced by tho vxhnnst pressure through the auxiliary urt on the valve provided for that purl. suhstuntinlly as described.

In tustilnuny hereof \ve :lflix our invs in prt-svnm- 0f two witnesses. 

